Changes since our inception review:

- We've completed our SMF design for persistent state storage, which
  calls for extensions to sharectl(1M) to manage global settings.

- We've backed off from our original design for multi-user mounts
  due to schedule pressure and a better understanding of all the
  changes needed to implement the design.  Our design now calls
  for:
  - a 1:1 relationship between an authenticated connection and a mount
  - new mounting rules to permit a user to do personal mounts.

  We want to go later to multi-user mounts, where each user has a
  distinct, authenticated connection shared by different mounts.

- We've learned a lot about authentication and updated the design
  document with that.

- We've tossed our prior implementation of MD4 in favor of PSARC 2007/139.

- We've dropped plans to deliver any MS-RPC support, since we don't
  need it for a first release; that permits unified MS-RPC support
  to be done later with awareness of client and server codebases.